Construction board



FIG. 1 is a top plan view of the construction board showing my newdesign;

FIG. 2 is front elevational view of FIG. 1, the rear, left side andright side elevational views being identical;

FIG. 3 is a bottom plan view of FIG. 1; and,

FIG. 4 is a sectional view taken along the line 4—4 in FIG. 3.

The ornamental design for a construction board, as shown and described.